PE composite material for drainage pipe and preparation method of PE composite material

Abstract

The invention relates to the technical field of PE composite material preparation, and discloses a PE composite material for a drainage pipe and a preparation method thereof.The PE composite material comprises a bottom plate, supporting legs are fixedly connected to the upper surface of the bottom plate, a drying cylinder is fixedly connected to the upper surfaces of the supporting legs, and a mounting plate is fixedly connected to the side face of the drying cylinder; and a driving column is rotationally connected to the back face of the mounting plate, a stirring rod is fixedly connected to one end of the driving column, the surface of the stirring rod is fixedly sleeved with stirring blades, and a barrel frame is arranged in the drying barrel. A driven gear rotates and then drives a connecting rod to rotate, the connecting rod drives a stirring rod to rotate through a transmission belt and a driving wheel, the stirring rod rotates and then drives a stirring blade to rotate anticlockwise to stir a mixture in a stainless steel wire net, and meanwhile an axial fan rotates and blows air to be heated through an electric heating wire and blown into a drying cylinder to dry the mixture. Therefore, the equipment has the effect of accelerating the drying speed while mixing the materials.

Description

Technical Field

[0001] The invention belongs to the technical field of PE composite material preparation, and specifically relates to a PE composite material for drainage pipes and a preparation method thereof. Background Art

[0002] PE drainage pipes are corrosion-resistant, wear-resistant, and flexible. PE is an inert material. Except for a few strong oxidants, it can withstand the erosion of various chemical media, has no electrochemical corrosion, and does not require an anti-corrosion layer. Therefore, it can be used for a long time to discharge domestic sewage, industrial wastewater, rainwater and other sewage with complex components. In some special environments, such as submarine drainage, landfill leachate collection and discharge, PE drainage pipes are also used due to their excellent performance. PE composite materials refer to materials with various excellent properties that are prepared by a specific process with polyethylene (PE) as the matrix and one or more other materials (such as fibers, particles, etc.) added. These added materials can be inorganic materials, organic materials, etc., which interact with the PE matrix to give the composite materials such as enhanced mechanical properties, improved heat resistance, and improved corrosion resistance. According to the required composite material performance, select the appropriate polyethylene (PE) type, such as low-density polyethylene (LDPE), high-density polyethylene (HDPE), linear low-density polyethylene (LLDPE), etc., and determine other polymers to be blended with it, such as polyamide (PA), ethylene-vinyl acetate copolymer (EVA), or functional additives, such as antioxidants, flame retardants, etc. The commonly used preparation method of PE composite materials is to use the blending method to fully mix the PE matrix resin and various additives under a certain temperature and shear force. The key to this method is to make the additives evenly dispersed in the PE matrix to form a composite material with stable performance. The blending method is a relatively easy preparation method. It does not require complex chemical reaction equipment and strict reaction conditions. Compared with the in-situ polymerization method, it has lower equipment requirements and is easy to achieve large-scale production in industrial production. Many plastic processing companies only need to make appropriate adjustments based on the existing extrusion equipment to carry out the blending preparation of PE composite materials.

[0003] However, the following problems still exist: when the raw materials entering the production contain more water, the water will quickly vaporize to form water vapor in the high-temperature molten state when directly entering the twin-screw extruder for blending. Due to the high viscosity of the polymer melt, these water vapors are difficult to escape and will be trapped inside the material. Finally, bubbles or pores will be formed after cooling and solidification. For injection molded products, pores will weaken the mechanical strength of the products, making them more prone to cracking and breakage when subjected to external forces, affecting the quality of the product after molding. Summary of the invention

[0004] The object of the present invention is to solve the following problem: when the raw materials for production contain a relatively large amount of moisture and directly enter the twin-screw extruder for blending, at the high-temperature melting state, the moisture will rapidly vaporize to form water vapor. Due to the relatively high viscosity of the polymer melt, these water vapor are difficult to escape and will be trapped inside the material. Eventually, after cooling and solidification, bubbles or pores will be formed. For injection-molded products, the pores will weaken the mechanical strength of the products, making them more likely to crack and break when subjected to external forces, which affects the quality of the products after molding.

[0005] The object of the present invention can be achieved by the following technical solutions: The technical solution adopted by the present invention is as follows: a preparation method of a PE composite material for drainage pipes, including a bottom plate, the upper surface of the bottom plate is fixedly connected with support legs, the upper surface of the support legs is fixedly connected with a drying cylinder, the side surface of the drying cylinder is fixedly connected with a mounting plate, the back surface of the mounting plate is rotatably connected with a driving column, one end of the driving column is fixedly connected with a stirring rod, the surface of the stirring rod is fixedly sleeved with stirring blades, a cylinder frame is arranged inside the drying cylinder, the cylinder frame is sleeved on the surface of the stirring blades, and a stainless steel wire mesh is fixedly connected inside the cylinder frame, the side surface of the drying cylinder is fixedly connected with a feed cylinder, and one side of the feed cylinder away from the drying cylinder is fixedly connected with a feed box; The side surface of the drying cylinder is fixedly connected with a first motor, the output end of the first motor is fixedly connected with a driving rod, the surface of the driving rod is fixedly sleeved with a first gear, the surface of the cylinder frame is fixedly sleeved with a second gear, the side surface of the second gear is meshed with the side surface of the first gear, one end of the driving rod away from the first motor is fixedly connected with a driving gear, the side surface of the drying cylinder is rotatably connected with a round rod, the surface of the round rod is fixedly sleeved with a right-angle gear, the side of the mounting plate close to the drying cylinder is rotatably connected with a connecting rod, one end of the connecting rod close to the driving rod is fixedly connected with a driven gear, the side surface of the right-angle gear is respectively meshed with the front surface of the driving gear and the back surface of the driven gear, and the surfaces of the stirring rod and the connecting rod are both fixedly sleeved with driving wheels, and a transmission belt is sleeved on the surface of the driving wheels.

[0006] Preferably, the upper surface of the drying cylinder is fixedly connected with a housing, the inner wall of the drying cylinder is provided with electric heating wires, air outlet holes are opened on the lower surface of the housing, the air outlet holes are communicated with the inside of the housing, one side of the housing away from the drying cylinder is fixedly connected with an air cylinder, an axial fan is fixedly connected to the inner wall of the air cylinder, air vent holes are opened on one side of the air cylinder away from the housing, the air vent holes are communicated with the inside of the air cylinder. After the axial fan operates, it blows air through the fan blades, and the blown air is heated by the electric heating wires and blown into the drying cylinder, and cooperates with the stirring blades to continuously turn the mixture, thereby drying the mixture.

[0007] Preferably, a limiting plate is fixedly connected to the inner wall of the drying cylinder. A roller is rotatably connected to one side of the limiting plate. The side of the roller away from the inner wall of the drying cylinder is attached to the surface of the cylinder frame. A bearing is embedded in the back surface of the mounting plate. The inner ring surface of the bearing is fixedly connected to the surface of the driving column. The driving column is rotatably connected to the back surface of the mounting plate through the bearing. By providing the limiting plate, the roller can be used to fit on the surface of the cylinder frame. By providing the bearing, when the driving column is driven, it can rotate on the back surface of the mounting plate, so that the stirring rod rotates and drives the stirring blades to stir the mixture.

[0008] Preferably, a screening shell is fixedly connected to the upper surface of the bottom plate. A mesh frame is slidably connected to the inner wall of the screening shell. A screen is fixedly connected to the inner wall of the mesh frame. A second motor is fixedly connected to the side surface of the screening shell. The output end of the second motor is fixedly connected to a rotating rod. A pushing plate is fixedly sleeved on the surface of the rotating rod. A pressure receiving plate is fixedly connected to the lower surface of the mesh frame. The upper surface of the pushing plate is adapted to the lower surface of the pressure receiving plate. A cushion plate is fixedly connected to the inner wall of the screening shell. A spring is fixedly connected to the upper surface of the cushion plate. The end of the spring away from the cushion plate is fixedly connected to the lower surface of the mesh frame. A limiting rod is fixedly connected to the lower surface of the mesh frame. The end of the limiting rod away from the mesh frame penetrates through the upper surface of the cushion plate, and the spring is sleeved on the surface of the limiting rod. A waste collection box is arranged below the screening shell. Handles are fixedly connected to both sides of the waste collection box. The mixed material falls onto the surface of the screen from the edge of the cylinder frame. Then, the second motor is turned on. The second motor operates to drive the rotating rod to rotate. The rotating rod rotates to drive the pushing plate to rotate. The pushing plate rotates past the pressure receiving plate and squeezes the pressure receiving plate. After the pressure receiving plate is squeezed, it pushes the mesh frame to move upward. After the pushing plate passes the pressure receiving plate, at this time, the spring pulls the mesh frame to move back to its original position. The rotating rod continuously drives the pushing plate to rotate, repeatedly squeezing the pressure receiving plate. At this time, the mesh frame drives the screen to continuously shake up and down to screen the impurities in the mixture into the waste collection box. After the pushing plate passes the pressure receiving plate, at this time, the spring pulls the mesh frame to move back to its original position. The rotating rod continuously drives the pushing plate to rotate, repeatedly squeezing the pressure receiving plate. At this time, the mesh frame drives the screen to continuously shake up and down to screen the impurities in the mixture into the waste collection box.

[0009] Preferably, a material receiving box is fixedly connected to the upper surface of the bottom plate. A conveying pipe is fixedly connected to the side surface of the material receiving box. A conveying motor is fixedly connected to the side of the conveying pipe away from the material receiving box. The output end of the conveying motor is fixedly connected to a conveying rod. A spiral blade is fixedly sleeved on the surface of the conveying rod. The screened mixture enters the material receiving box and then enters the conveying pipe from the material receiving box. Then, the conveying motor is turned on. The conveying motor operates to drive the conveying rod to rotate. The conveying rod rotates to drive the spiral blade to rotate. The spiral blade rotates to convey the mixture into the feeding funnel.

[0010] Preferably, a bracket is fixedly connected to the upper surface of the bottom plate. A twin-screw extruder is fixedly connected to the upper surface of the bracket. A feeding hopper is fixedly connected to the upper surface of the twin-screw extruder. A feeding box is fixedly connected to the upper surface of the feeding hopper. The inner wall of the feeding box is fixedly sleeved on the surface of the conveying pipe. The inside of the twin-screw extruder mainly includes a twin-screw, an extrusion barrel, a heating and cooling system, and an extrusion port. During the extrusion process, the screw rotates to gradually push the plastic raw material from the feeding hopper towards the discharge port, and melting, mixing, and compression are achieved during the pushing process. In order to keep the extrusion barrel and the screw within an appropriate temperature range, the heating and cooling system ensures the melting and extrusion quality of the plastic raw material. The melted plastic forms the required cross-sectional shape through the die head and is extruded through the extrusion port onto a mold or other equipment to form the required plastic product. This is an existing structure and will not be elaborated here.

[0011] Preferably, an air cylinder is fixedly connected to the upper surface of the bottom plate. A rubber pressing disc is slidably sleeved on the inner wall of the air cylinder. A driving plate is fixedly connected to the top end of the rubber pressing disc. An electric push rod is fixedly connected to the side surface of the air cylinder. The top end of the electric push rod is fixedly connected to the lower surface of the driving plate. An air outlet pipe is fixedly connected to the side surface of the air cylinder. The end of the air outlet pipe away from the air cylinder penetrates through the back surface of the feeding hopper and is communicated with the inside of the feeding hopper. When the conveying port of the feeding hopper and the twin-screw extruder is blocked, the electric push rod is turned on. The electric push rod operates to push the driving plate upward. The upward movement of the driving plate drives the rubber pressing disc upward. At this time, a negative pressure is generated below the rubber pressing disc.

[0012] Preferably, an air inlet pipe is fixedly connected to the lower surface of the air cylinder. A sealing plug is sleeved on the inner wall of the air inlet pipe. A limiting frame is fixedly connected to the inner wall of the air outlet pipe. A sliding plate is slidably sleeved on the surface of the limiting frame. A cross bar is fixedly connected to the side of the sliding plate away from the inner wall of the air outlet pipe. A sealing ball is fixedly connected to one end of the cross bar. The sealing ball and the sealing plug are both made of rubber. The sealing ball fits on the inner wall of the air outlet pipe. When the sealing plug moves upward, at this time, external air enters the feeding cylinder from the air inlet pipe. Then the electric push rod drives the rubber pressing disc to move downward through the driving plate. At this time, the sealing ball is pushed open. The sealing plug moves downward to seal the inner wall of the air inlet pipe. The air is blown into the feeding hopper to blow away the blocked mixture.

[0013] Preferably, the steps are as follows: Step 1, first put polyethylene and other materials into the feeding box, and then the mixed particles slide down the feeding tube into the stainless steel wire mesh in the cylinder frame. Then, turn on the first motor, axial fan, and heating wire respectively. The operation of the first motor drives the driving rod to rotate. The rotation of the driving rod drives the first gear to rotate, the rotation of the first gear drives the second gear to rotate, and the rotation of the second gear drives the cylinder frame to rotate. At the same time, the rotation of the driving rod drives the driving gear to rotate clockwise. The driving gear drives the driven gear to rotate counterclockwise through the right-angle gear, and the rotation of the driven gear drives the connecting rod to rotate. The connecting rod drives the stirring rod to rotate through the transmission belt and driving wheel. The rotation of the stirring rod drives the stirring blades to rotate counterclockwise to stir the mixture in the stainless steel wire mesh. At the same time, the axial fan rotates and blows air, which is heated by the heating wire and blown into the drying cylinder to dry the mixture.

[0014] Step 2, the mixed material falls from the edge of the cylinder frame onto the surface of the sieve mesh. Then, turn on the second motor. The operation of the second motor drives the rotating rod to rotate. The rotation of the rotating rod drives the push plate to rotate. The push plate rotates through the pressure-receiving plate and squeezes the pressure-receiving plate. After the pressure-receiving plate is squeezed, it pushes the mesh frame upward. Until the push plate passes through the pressure-receiving plate, at this time, the spring pulls the mesh frame to move back to its original position. The rotating rod continuously drives the push plate to rotate, repeatedly squeezing the pressure-receiving plate. At this time, the mesh frame drives the sieve mesh to shake up and down continuously to screen the impurities in the mixture into the waste collection box.

[0015] Step 3, the mixture after sieving enters the receiving box and then enters the conveying pipe from the receiving box. Then, turn on the conveying motor. The operation of the conveying motor drives the conveying rod to rotate. The rotation of the conveying rod drives the spiral blade to rotate. The spiral blade rotates to convey the mixture into the feeding funnel. Then, the mixture is melted and extruded by the twin-screw extruder. When the conveying port of the feeding funnel and the twin-screw extruder is blocked, turn on the electric push rod. The operation of the electric push rod drives the driving plate to move upward. The upward movement of the driving plate drives the rubber pressing disc to move upward. At this time, a negative pressure is generated below the rubber pressing disc, and the sealing ball fits on the inner wall of the air outlet pipe, and the sealing plug moves upward. At this time, the outside air enters the feeding cylinder from the air inlet pipe. Then, the electric push rod drives the rubber pressing disc to move downward through the driving plate. The sealing ball is pushed open at this time, and the sealing plug moves downward to seal the inner wall of the air inlet pipe. The air is blown into the feeding funnel to blow open the blocked mixture.

[0016] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present invention are: 1. In the present invention, first, polyethylene and other materials are placed into the feeding box. Then, the mixed particles slide along the feeding tube into the stainless-steel wire mesh inside the cylinder frame. Next, the first motor, the axial fan, and the heating wire are respectively turned on. The operation of the first motor drives the driving rod to rotate. The rotation of the driving rod drives the first gear to rotate. The rotation of the first gear drives the second gear to rotate. The rotation of the second gear drives the cylinder frame to rotate. At the same time, the rotation of the driving rod drives the driving gear to rotate clockwise. The driving gear drives the driven gear to rotate counterclockwise through the right-angle gear. The rotation of the driven gear drives the connecting rod to rotate. The connecting rod drives the stirring rod to rotate through the transmission belt and the driving wheel. The rotation of the stirring rod drives the stirring blades to rotate counterclockwise to stir the mixture inside the stainless-steel wire mesh. At the same time, the axial fan rotates to blow air, which is heated by the heating wire and blown into the drying cylinder to dry the mixture, so that the device has the effect of accelerating the drying speed while mixing the materials.

[0017] 2. In the present invention, the mixed materials fall from the edge of the cylinder frame onto the surface of the sieve mesh. Then, the second motor is turned on. The operation of the second motor drives the rotating rod to rotate. The rotation of the rotating rod drives the push plate to rotate. The push plate rotates through the pressure-receiving plate and squeezes the pressure-receiving plate. After the pressure-receiving plate is squeezed, it pushes the mesh frame upward. Until the push plate passes through the pressure-receiving plate, at this time, the spring pulls the mesh frame to move back to its original position. The rotating rod continuously drives the push plate to rotate, repeatedly squeezing the pressure-receiving plate. At this time, the mesh frame drives the sieve mesh to shake up and down continuously, screening the impurities in the mixture into the waste collection box, so that the device has the effect of facilitating the cleaning of impurities in the mixture.

[0018] 3. In the present invention, the mixture after screening enters the receiving box and then enters the conveying pipe from the receiving box. Then, the conveying motor is turned on. The operation of the conveying motor drives the conveying rod to rotate. The rotation of the conveying rod drives the spiral blade to rotate. The spiral blade rotates to convey the mixture into the feeding funnel. Then, the mixture is melted and extruded by the twin-screw extruder. When the feeding funnel and the conveying port of the twin-screw extruder are blocked, the electric push rod is turned on. The operation of the electric push rod drives the driving plate to move upward. The upward movement of the driving plate drives the rubber pressing disc to move upward. At this time, a negative pressure is generated below the rubber pressing disc. The sealing ball fits on the inner wall of the air outlet pipe, and the sealing plug moves upward. At this time, the outside air enters the feeding tube from the air inlet pipe. Then, the electric push rod drives the rubber pressing disc to move downward through the driving plate. The sealing ball is pushed open at this time, and the sealing plug moves downward to seal the inner wall of the air inlet pipe. The air is blown into the feeding funnel to blow open the blocked mixture, so that the device has the effect of unclogging. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings: Figure 1 Front view structural schematic diagram of the present invention; Figure 2 Rear view structural schematic diagram of the present invention; Figure 3 Exploded structural schematic diagram of the present invention in the side view direction; Figure 4 Front view structural schematic diagram of the present invention; Figure 5 Front view structural schematic diagram of the present invention; Figure 6 Exploded structural schematic diagram of the present invention; Figure 7 Front sectional structural schematic diagram of the present invention; Figure 8 Front sectional structural schematic diagram of the present invention; Figure 9 Side sectional structural schematic diagram of the present invention; Figure 10 Front sectional structural schematic diagram of the present invention.

[0020] Markings in the figure: 1, bottom plate; 2, support leg; 3, drying cylinder; 4, housing; 5, air duct; 6, ventilation hole; 7, mounting plate; 8, bearing; 9, limiting plate; 10, roller; 11, first motor; 12, driving rod; 13, driving gear; 14, bevel gear; 15, transmission belt; 16, driving wheel; 17, second motor; 18, mesh frame; 19, material receiving box; 20, screening shell; 21, driving column; 22, waste collection box; 23, bracket; 24, feeding funnel; 25, feeding box; 26, conveying pipe; 27, conveying motor; 28, feeding box; 29, feeding cylinder; 30, twin-screw extruder; 31, electric push rod; 32, spring; 33, backing plate; 34, limiting rod; 35, handle; 36, push plate; 37, pressure receiving plate; 38, rotating rod; 39, axial fan; 40, heating wire; 41, air outlet hole; 42, first gear; 43, second gear; 44, cylinder frame; 45, driven gear; 46, round rod; 47, connecting rod; 48, stirring rod; 49, stirring blade; 50, spiral blade; 51, conveying rod; 52, air outlet pipe; 53, driving plate; 54, rubber pressing disc; 55, limiting frame; 56, sealing ball; 57, cross bar; 58, sliding plate; 59, stainless steel wire mesh; 60, sieve mesh; 61, air inlet pipe; 62, sealing plug; 63, air cylinder. Specific embodiments

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without any creative efforts fall within the scope of protection of the present invention.

[0022] Referring to Figure 2-5 , a PE composite material for drainage pipes and its preparation method, including a bottom plate 1. A support leg 2 is fixedly connected to the upper surface of the bottom plate 1. A drying cylinder 3 is fixedly connected to the upper surface of the support leg 2. An installation plate 7 is fixedly connected to the side surface of the drying cylinder 3. A driving column 21 is rotatably connected to the back surface of the installation plate 7. One end of the driving column 21 is fixedly connected to a stirring rod 48. A stirring blade 49 is fixedly sleeved on the surface of the stirring rod 48. A cylinder frame 44 is arranged inside the drying cylinder 3. The cylinder frame 44 is sleeved on the surface of the stirring blade 49. And a stainless steel wire mesh 59 is fixedly connected inside the cylinder frame 44. By setting the stainless steel wire mesh 59, stainless steel has an anti-corrosion effect, and the mesh size of the stainless steel wire mesh 59 is fifty to two hundred microns. While effectively intercepting target particles, the ventilation volume is maintained, enabling the wind to pass through smoothly without causing excessive wind resistance.

[0023] Referring to Figure 4-8 , a first motor 11 is fixedly connected to the side surface of the drying cylinder 3. The output end of the first motor 11 is fixedly connected to a driving rod 12. A first gear 42 is fixedly sleeved on the surface of the driving rod 12. A second gear 43 is fixedly sleeved on the surface of the cylinder frame 44. The side surface of the second gear 43 meshes with the side surface of the first gear 42. Polyethylene and other materials are put into the drying cylinder 3. Then the mixed particles slide into the stainless steel wire mesh 59 inside the cylinder frame 44 along the feeding cylinder 29. Then, the first motor 11, the axial flow fan 39, and the heating wire 40 are respectively turned on. The operation of the first motor 11 drives the driving rod 12 to rotate. The rotation of the driving rod 12 drives the first gear 42 to rotate. The rotation of the first gear 42 drives the second gear 43 to rotate. The rotation of the second gear 43 drives the cylinder frame 44 to rotate.

[0024] Referring to Figure 7-10, one end of the driving rod 12 away from the first motor 11 is fixedly connected with a driving gear 13. A round rod 46 is rotatably connected to the side surface of the drying cylinder 3. A right-angle gear 14 is fixedly sleeved on the surface of the round rod 46. One side of the mounting plate 7 close to the drying cylinder 3 is rotatably connected with a connecting rod 47. One end of the connecting rod 47 close to the driving rod 12 is fixedly connected with a driven gear 45. The side surface of the right-angle gear 14 is meshed with the front surface of the driving gear 13 and the back surface of the driven gear 45 respectively. Driving wheels 16 are fixedly sleeved on the surfaces of the stirring rod 48 and the connecting rod 47. A transmission belt 15 is sleeved on the surface of the driving wheel 16. When the driving rod 12 rotates, the driving gear 13 rotates clockwise. The driving gear 13 drives the driven gear 45 to rotate counterclockwise through the right-angle gear 14. The rotation of the driven gear 45 drives the connecting rod 47 to rotate. The connecting rod 47 drives the stirring rod 48 to rotate through the transmission belt 15 and the driving wheel 16. The rotation of the stirring rod 48 drives the stirring blades 49 to rotate counterclockwise to stir the mixture in the stainless steel wire mesh 59.

[0025] Refer to Figure 2-6 , a housing 4 is fixedly connected to the upper surface of the drying cylinder 3. An electric heating wire 40 is arranged on the inner wall of the drying cylinder 3. An air outlet hole 41 is opened on the lower surface of the housing 4. The air outlet hole 41 is communicated with the inside of the housing 4. A wind cylinder 5 is fixedly connected to one side of the housing 4 away from the drying cylinder 3. Axial fans 39 are fixedly connected to the inner wall of the wind cylinder 5. An air vent hole 6 is opened on one side of the wind cylinder 5 away from the housing 4. The air vent hole 6 is communicated with the inside of the wind cylinder 5. After the axial fans 39 operate, they blow air through the fan blades. The blown air is heated by the electric heating wire 40 and blown into the drying cylinder 3, and cooperates with the stirring blades 49 to continuously turn over the mixture, so as to dry the mixture.

[0026] Refer to Figure 4-8 , a limiting plate 9 is fixedly connected to the inner wall of the drying cylinder 3. A roller 10 is rotatably connected to one side of the limiting plate 9. One side of the roller 10 away from the inner wall of the drying cylinder 3 is attached to the surface of the cylinder frame 44. By setting the limiting plate 9, the roller 10 can be used to attach to the surface of the cylinder frame 44.

[0027] Refer to Figure 1-3 , a bearing 8 is embedded on the back surface of the mounting plate 7. The inner ring surface of the bearing 8 is fixedly connected to the surface of the driving column 21. The driving column 21 is rotatably connected to the back surface of the mounting plate 7 through the bearing 8. By setting the bearing 8, when the driving column 21 is driven, it can rotate on the back surface of the mounting plate 7, so that the stirring rod 48 rotates and drives the stirring blades 49 to stir the mixture.

[0028] Refer to Figure 2-4, a feed cylinder 29 is fixedly connected to the side of the drying cylinder 3, and a feed box 28 is fixedly connected to the side of the feed cylinder 29 away from the drying cylinder 3. The raw materials are put into the drying cylinder 3, and the raw materials slide along the inclined wall of the drying cylinder 3 into the feed cylinder 29. The feed cylinder 29 is inclined as a whole. After the raw materials enter the feed cylinder 29, they slide into the stainless steel wire mesh 59 on the cylinder frame 44, which facilitates the raw materials to slide into the interior of the drying cylinder 3.

[0029] Refer to Figure 7-10 , a screening shell 20 is fixedly connected to the upper surface of the bottom plate 1. A mesh frame 18 is slidably connected to the inner wall of the screening shell 20. A screen 60 is fixedly connected to the inner wall of the mesh frame 18. A second motor 17 is fixedly connected to the side of the screening shell 20. The output end of the second motor 17 is fixedly connected to a rotating rod 38. A pushing plate 36 is fixedly sleeved on the surface of the rotating rod 38. A pressure receiving plate 37 is fixedly connected to the lower surface of the mesh frame 18. The upper surface of the pushing plate 36 is adapted to the lower surface of the pressure receiving plate 37. The mixed materials fall onto the surface of the screen 60 from the edge of the cylinder frame 44. Then, the second motor 17 is turned on. The operation of the second motor 17 drives the rotating rod 38 to rotate. The rotation of the rotating rod 38 drives the pushing plate 36 to rotate. The pushing plate 36 rotates past the pressure receiving plate 37 and squeezes the pressure receiving plate 37. After the pressure receiving plate 37 is squeezed, it pushes the mesh frame 18 to move upward. A cushion plate 33 is fixedly connected to the inner wall of the screening shell 20. A spring 32 is fixedly connected to the upper surface of the cushion plate 33. The end of the spring 32 away from the cushion plate 33 is fixedly connected to the lower surface of the mesh frame 18. A limiting rod 34 is fixedly connected to the lower surface of the mesh frame 18. The end of the limiting rod 34 away from the mesh frame 18 penetrates the upper surface of the cushion plate 33, and the spring 32 is sleeved on the surface of the limiting rod 34. After the pushing plate 36 passes the pressure receiving plate 37, at this time, the spring 32 pulls the mesh frame 18 to move back to its original position. The rotating rod 38 continuously drives the pushing plate 36 to rotate, repeatedly squeezing the pressure receiving plate 37. At this time, the mesh frame 18 drives the screen 60 to continuously shake up and down to screen the impurities in the mixed materials into the waste collection box 22.

[0030] Refer to Figure 1-2 , a waste collection box 22 is arranged below the screening shell 20. Handles 35 are fixedly connected to both sides of the waste collection box 22. After the mixed materials are screened, the impurities are collected by the waste collection box 22. Then, the user drags the waste collection box 22 out from below the screening shell 20 by using the handles 35, and then pours out the waste impurities collected by the waste collection box 22.

[0031] Refer to Figure 2-6, a material receiving box 19 is fixedly connected to the upper surface of the bottom plate 1. A conveying pipe 26 is fixedly connected to the side surface of the material receiving box 19. A conveying motor 27 is fixedly connected to the side of the conveying pipe 26 away from the material receiving box 19. An output end of the conveying motor 27 is fixedly connected to a conveying rod 51. A spiral blade 50 is fixedly sleeved on the surface of the conveying rod 51. The mixed material after screening enters the material receiving box 19, then enters the conveying pipe 26 from the material receiving box 19. After that, the conveying motor 27 is turned on. The operation of the conveying motor 27 drives the conveying rod 51 to rotate. The rotation of the conveying rod 51 drives the spiral blade 50 to rotate. The rotation of the spiral blade 50 conveys the mixed material into the feeding funnel 24.

[0032] Refer to Figure 2-6 , a bracket 23 is fixedly connected to the upper surface of the bottom plate 1. A twin-screw extruder 30 is fixedly connected to the upper surface of the bracket 23. A feeding funnel 24 is fixedly connected to the upper surface of the twin-screw extruder 30. A feeding box 25 is fixedly connected to the upper surface of the feeding funnel 24. The inner wall of the feeding box 25 is fixedly sleeved on the surface of the conveying pipe 26. The interior of the twin-screw extruder 30 mainly includes twin screws, an extrusion barrel, a heating and cooling system, and an extrusion port. During the extrusion process, the screws rotate to gradually push the plastic raw material from the feeding funnel 24 towards the discharge port, and melting, mixing, and compression are achieved during the pushing process. In order to keep the extrusion barrel and the screws within an appropriate temperature range, the heating and cooling system ensures the melting and extrusion quality of the plastic raw material. The melted plastic forms the required cross-sectional shape through the die head and is extruded through the extrusion port onto a mold or other equipment to form the required plastic products. This is an existing structure and will not be elaborated here.

[0033] Refer to Figure 2-3, a cylinder 63 is fixedly connected to the upper surface of the bottom plate 1. A rubber pressing disc 54 is slidably sleeved on the inner wall of the cylinder 63. The top end of the rubber pressing disc 54 is fixedly connected to a driving plate 53. An electric push rod 31 is fixedly connected to the side surface of the cylinder 63. The top end of the electric push rod 31 is fixedly connected to the lower surface of the driving plate 53. An air outlet pipe 52 is fixedly connected to the side surface of the cylinder 63. The end of the air outlet pipe 52 away from the cylinder 63 penetrates through the back surface of the feeding funnel 24 and is communicated with the inside of the feeding funnel 24. When the conveying port of the feeding funnel 24 and the twin-screw extruder 30 is blocked, the electric push rod 31 is turned on. The electric push rod 31 operates to push the driving plate 53 upward. The upward movement of the driving plate 53 drives the rubber pressing disc 54 to move upward. At this time, a negative pressure is generated below the rubber pressing disc 54. An air inlet pipe 61 is fixedly connected to the lower surface of the cylinder 63. A sealing plug 62 is sleeved on the inner wall of the air inlet pipe 61. A limiting frame 55 is fixedly connected to the inner wall of the air outlet pipe 52. A sliding plate 58 is slidably sleeved on the surface of the limiting frame 55. One side of the sliding plate 58 away from the inner wall of the air outlet pipe 52 is fixedly connected to a cross bar 57. One end of the cross bar 57 is fixedly connected to a sealing ball 56. The sealing ball 56 and the sealing plug 62 are both made of rubber. The sealing ball 56 fits on the inner wall of the air outlet pipe 52. The sealing plug 62 moves upward. At this time, external air enters the feeding cylinder 29 from the air inlet pipe 61. Then the electric push rod 31 drives the rubber pressing disc 54 to move downward through the driving plate 53. The sealing ball 56 is pushed open at this time. The sealing plug 62 moves downward to seal the inner wall of the air inlet pipe 61. Air is blown into the feeding funnel 24 to blow open the blocked mixture.

[0034] The implementation principle of the embodiment of the PE composite material for drainage pipes and its preparation method of the present invention is as follows: First, polyethylene and other materials are placed into the feeding box 28. Then the mixed particles slide along the feeding cylinder 29 onto the stainless steel wire mesh 59 in the cylinder frame 44. Then the first motor 11, the axial fan 39 and the heating wire 40 are respectively turned on. The first motor 11 operates to drive the driving rod 12 to rotate. The rotation of the driving rod 12 drives the first gear 42 to rotate. The rotation of the first gear 42 drives the second gear 43 to rotate. The rotation of the second gear 43 drives the cylinder frame 44 to rotate. At the same time, the rotation of the driving rod 12 drives the driving gear 13 to rotate clockwise. The driving gear 13 drives the driven gear 45 to rotate counterclockwise through the right-angle gear 14. The rotation of the driven gear 45 drives the connecting rod 47 to rotate. The connecting rod 47 drives the stirring rod 48 to rotate through the transmission belt 15 and the driving wheel 16. The rotation of the stirring rod 48 drives the stirring blade 49 to rotate counterclockwise to stir the mixture in the stainless steel wire mesh 59. At the same time, the axial fan 39 rotates to blow air which is heated by the heating wire 40 and blown into the drying cylinder 3 to dry the mixture. Thus, the device has the effect of accelerating the drying speed while mixing the materials.

[0035] In addition, the mixed material falls onto the surface of the screen mesh 60 from the edge of the cylinder frame 44. Then, the second motor 17 is turned on. The operation of the second motor 17 drives the rotating rod 38 to rotate. The rotation of the rotating rod 38 drives the push plate 36 to rotate. The push plate 36 rotates past the pressure-receiving plate 37 and squeezes the pressure-receiving plate 37. After the pressure-receiving plate 37 is squeezed, it pushes the mesh frame 18 upward. Until the push plate 36 passes the pressure-receiving plate 37, at this time, the spring 32 pulls the mesh frame 18 to move back to its original position. The rotating rod 38 continuously drives the push plate 36 to rotate, repeatedly squeezing the pressure-receiving plate 37. At this time, the mesh frame 18 drives the screen mesh 60 to continuously shake up and down, screening the impurities in the mixed material into the waste collection box 22, so that the device has the effect of facilitating the cleaning of impurities in the mixed material.

[0036] In addition, the mixed material after screening enters the receiving box 19, and then enters the conveying pipe 26 from the receiving box 19. Then, the conveying motor 27 is turned on. The operation of the conveying motor 27 drives the conveying rod 51 to rotate. The rotation of the conveying rod 51 drives the spiral blade 50 to rotate. The rotation of the spiral blade 50 conveys the mixed material into the feeding funnel 24. Then, the mixed material is melted and extruded through the twin-screw extruder 30. When the conveying port of the feeding funnel 24 and the twin-screw extruder 30 is blocked, the electric push rod 31 is turned on. The operation of the electric push rod 31 drives the driving plate 53 to move upward. The upward movement of the driving plate 53 drives the rubber pressing disc 54 to move upward. At this time, a negative pressure is generated below the rubber pressing disc 54, and the sealing ball 56 fits on the inner wall of the air outlet pipe 52. The sealing plug 62 moves upward. At this time, external air enters the feeding cylinder 29 from the air inlet pipe 61. Then, the electric push rod 31 drives the rubber pressing disc 54 to move downward through the driving plate 53. The sealing ball 56 is pushed open at this time, and the sealing plug 62 moves downward to seal the inner wall of the air inlet pipe 61. The air is blown into the feeding funnel 24 to blow open the blocked mixed material, so that the device has the effect of unclogging.

[0037] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A preparation method of a PE composite material for drainage pipes, including a bottom plate (1), characterized in that: The upper surface of the bottom plate (1) is fixedly connected with support legs (2), the upper surface of the support legs (2) is fixedly connected with a drying cylinder (3), the side surface of the drying cylinder (3) is fixedly connected with a mounting plate (7), the back surface of the mounting plate (7) is rotatably connected with a driving column (21), one end of the driving column (21) is fixedly connected with a stirring rod (48), the surface of the stirring rod (48) is fixedly sleeved with stirring blades (49), a cylinder frame (44) is arranged inside the drying cylinder (3), the cylinder frame (44) is sleeved on the surface of the stirring blades (49), and a stainless steel wire mesh (59) is fixedly connected inside the cylinder frame (44). The side surface of the drying cylinder (3) is fixedly connected with a feed cylinder (29), and one side of the feed cylinder (29) far away from the drying cylinder (3) is fixedly connected with a feed box (28). A first motor (11) is fixedly connected to the side surface of the drying cylinder (3). The output end of the first motor (11) is fixedly connected with a driving rod (12). A first gear (42) is fixedly sleeved on the surface of the driving rod (12). A second gear (43) is fixedly sleeved on the surface of the cylinder frame (44). The side surface of the second gear (43) is meshed with the side surface of the first gear (42). One end of the driving rod (12) far away from the first motor (11) is fixedly connected with a driving gear (13). A round rod (46) is rotatably connected to the side surface of the drying cylinder (3). A right-angle gear (14) is fixedly sleeved on the surface of the round rod (46). A connecting rod (47) is rotatably connected to one side of the mounting plate (7) close to the drying cylinder (3). A driven gear (45) is fixedly connected to one end of the connecting rod (47) close to the driving rod (12). The side surface of the right-angle gear (14) is respectively meshed with the front surface of the driving gear (13) and the back surface of the driven gear (45). Driving wheels (16) are fixedly sleeved on the surfaces of the stirring rod (48) and the connecting rod (47), and a transmission belt (15) is sleeved on the surface of the driving wheels (16).

2. The preparation method of a PE composite material for drainage pipes according to claim 1, characterized in that: A housing (4) is fixedly connected to the upper surface of the drying cylinder (3). An electric heating wire (40) is arranged on the inner wall of the drying cylinder (3). An air outlet hole (41) is opened on the lower surface of the housing (4), and the air outlet hole (41) is communicated with the inside of the housing (4). An air duct (5) is fixedly connected to one side of the housing (4) far away from the drying cylinder (3). Axial fans (39) are fixedly connected to the inner wall of the air duct (5). An air vent hole (6) is opened on one side of the air duct (5) far away from the housing (4), and the air vent hole (6) is communicated with the inside of the air duct (5).

3. The preparation method of a PE composite material for drainage pipes according to claim 1, characterized in that: A limiting plate (9) is fixedly connected to the inner wall of the drying cylinder (3). A roller (10) is rotatably connected to one side of the limiting plate (9). One side of the roller (10) far away from the inner wall of the drying cylinder (3) is attached to the surface of the cylinder frame (44). A bearing (8) is embedded in the back surface of the mounting plate (7), and the inner ring surface of the bearing (8) is fixedly connected to the surface of the driving column (21). The driving column (21) is rotatably connected to the back surface of the mounting plate (7) through the bearing (8).

4. The preparation method of a PE composite material for drainage pipes according to claim 1, characterized in that: The upper surface of the bottom plate (1) is fixedly connected with a screening shell (20). The inner wall of the screening shell (20) is slidably connected with a mesh frame (18). The inner wall of the mesh frame (18) is fixedly connected with a sieve mesh (60). The side surface of the screening shell (20) is fixedly connected with a second motor (17). The output end of the second motor (17) is fixedly connected with a rotating rod (38). The surface of the rotating rod (38) is fixedly sleeved with a pushing plate (36). The lower surface of the mesh frame (18) is fixedly connected with a pressure receiving plate (37). The upper surface of the pushing plate (36) is adapted to the lower surface of the pressure receiving plate (37). The inner wall of the screening shell (20) is fixedly connected with a cushion plate (33). The upper surface of the cushion plate (33) is fixedly connected with a spring (32). One end of the spring (32) far from the cushion plate (33) is fixedly connected with the lower surface of the mesh frame (18). The lower surface of the mesh frame (18) is fixedly connected with a limiting rod (34). One end of the limiting rod (34) far from the mesh frame (18) penetrates through the upper surface of the cushion plate (33), and the spring (32) is sleeved on the surface of the limiting rod (34). A waste collection box (22) is arranged below the screening shell (20). Both sides of the waste collection box (22) are fixedly connected with handles (35).

5. The preparation method of a PE composite material for drainage pipes as described in claim 1, characterized in that: The upper surface of the bottom plate (1) is fixedly connected with a material collection box (19). The side surface of the material collection box (19) is fixedly connected with a conveying pipe (26). One side of the conveying pipe (26) far from the material collection box (19) is fixedly connected with a conveying motor (27). The output end of the conveying motor (27) is fixedly connected with a conveying rod (51). The surface of the conveying rod (51) is fixedly sleeved with a spiral blade (50).

6. The preparation method of a PE composite material for drainage pipes as described in claim 1, characterized in that: The upper surface of the bottom plate (1) is fixedly connected with a bracket (23). The upper surface of the bracket (23) is fixedly connected with a twin-screw extruder (30). The upper surface of the twin-screw extruder (30) is fixedly connected with a feeding funnel (24). The upper surface of the feeding funnel (24) is fixedly connected with a feeding box (25). The inner wall of the feeding box (25) is fixedly sleeved on the surface of the conveying pipe (26).

7. The preparation method of a PE composite material for drainage pipes according to claim 1, characterized in that: The upper surface of the bottom plate (1) is fixedly connected with an air cylinder (63). The inner wall of the air cylinder (63) is slidably sleeved with a rubber pressing disc (54). The top end of the rubber pressing disc (54) is fixedly connected with a driving plate (53). The side surface of the air cylinder (63) is fixedly connected with an electric push rod (31). The top end of the electric push rod (31) is fixedly connected with the lower surface of the driving plate (53). The side surface of the air cylinder (63) is fixedly connected with an air outlet pipe (52). One end of the air outlet pipe (52) far from the air cylinder (63) penetrates through the back surface of the feeding funnel (24) and is communicated with the inside of the feeding funnel (24).

8. The preparation method of a PE composite material for drainage pipes according to claim 11, characterized in that: The lower surface of the air cylinder (63) is fixedly connected with an air inlet pipe (61). A sealing plug (62) is sleeved on the inner wall of the air inlet pipe (61). A limiting frame (55) is fixedly connected to the inner wall of the air outlet pipe (52). A sliding plate (58) is slidably sleeved on the surface of the limiting frame (55). One side of the sliding plate (58) away from the inner wall of the air outlet pipe (52) is fixedly connected with a cross bar (57). One end of the cross bar (57) is fixedly connected with a sealing ball (56). The sealing ball (56) and the sealing plug (62) are both made of rubber.

9. The preparation method of a PE composite material for drainage pipes according to claim 1, characterized in that: Step 1: First, put polyethylene and other materials into the feed box (28). Then the mixed particles slide along the feed cylinder (29) onto the stainless steel wire mesh (59) in the cylinder frame (44). Then, turn on the first motor (11), the axial flow fan (39), and the heating wire (40) respectively. The first motor (11) runs to drive the driving rod (12) to rotate. The driving rod (12) rotates to drive the first gear (42). The first gear (42) rotates to drive the second gear (43). The second gear (43) rotates to drive the cylinder frame (44) to rotate. At the same time, the driving rod (12) rotates to drive the driving gear (13) to rotate clockwise. The driving gear (13) drives the driven gear (45) to rotate counterclockwise through the right-angle gear (14). The driven gear (45) rotates to drive the connecting rod (47) to rotate. The connecting rod (47) drives the stirring rod (48) to rotate through the transmission belt (15) and the driving wheel (16). The stirring rod (48) rotates to drive the stirring blade (49) to rotate counterclockwise to stir the mixture in the stainless steel wire mesh (59). At the same time, the axial flow fan (39) rotates to blow air, which is heated by the heating wire (40) and blown into the drying cylinder (3) to dry the mixture. Step 2: The mixed material falls onto the surface of the sieve (60) from the edge of the cylinder frame (44). Then turn on the second motor (17). The second motor (17) runs to drive the rotating rod (38) to rotate. The rotating rod (38) rotates to drive the push plate (36) to rotate. The push plate (36) rotates past the pressure receiving plate (37) and squeezes the pressure receiving plate (37). After the pressure receiving plate (37) is squeezed, it pushes the screen frame (18) to move upward. Until the push plate (36) passes the pressure receiving plate (37), at this time, the spring (32) pulls the screen frame (18) to move back to its original position. The rotating rod (38) continuously drives the push plate (36) to rotate, repeatedly squeezing the pressure receiving plate (37). At this time, the screen frame (18) drives the sieve (60) to continuously shake up and down to screen the impurities in the mixture into the waste collection box (22). Step 3: The mixed material after screening enters the receiving box (19), and then enters the conveying pipe (26) from the receiving box (19). After that, the conveying motor (27) is turned on. The operation of the conveying motor (27) drives the conveying rod (51) to rotate. The rotation of the conveying rod (51) drives the spiral blade (50) to rotate. The rotation of the spiral blade (50) conveys the mixed material into the feeding funnel (24). Then, the mixed material is melted and extruded by the twin-screw extruder (30). When the feeding funnel (24) and the conveying port of the twin-screw extruder (30) are blocked, the electric push rod (31) is turned on. The operation of the electric push rod (31) pushes the driving plate (53) to move upward. The upward movement of the driving plate (53) drives the rubber pressing disc (54) to move upward. At this time, a negative pressure is generated below the rubber pressing disc (54). The sealing ball (56) fits on the inner wall of the air outlet pipe (52), and the sealing plug (62) moves upward. At this time, the outside air enters the feeding cylinder (29) from the air inlet pipe (61). Then, the electric push rod (31) drives the rubber pressing disc (54) to move downward through the driving plate (53). The sealing ball (56) is pushed open at this time, and the sealing plug (62) moves downward to seal the inner wall of the air inlet pipe (61). The air is blown into the feeding funnel (24) to blow open the blocked mixed material.

10. A PE composite material for drainage pipes as described in claim 1, characterized in that: The PE composite material is prepared by the preparation method of the PE composite material for drainage pipes as described in any one of claims 1 to 9.

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